Flameproof horn loudspeakers

Flameproof horn loudspeaker

Flameproof horn loudspeaker designed by Bosch. The LBC 3437/00 and LBC 3438/00 Horn Loudspeakers are specifically designed and approved for installations where explosive gas-air mixtures are likely to be present. They are suitable for use in all gas groups including hydrogen.

All Bosch loudspeakers are designed to withstand operating at their rated power for 100 hours in accordance with IEC 268-5 Power Handling Capacity (PHC) standards. Bosch has also developed the Simulated Acoustical Feedback Exposure (SAFE) test to demonstrate that they can withstand two times their rated power for short durations. This ensures extra reliability under extreme conditions, leading to higher customer satisfaction, longer operating life, and much less chance of failure or performance deterioration.

The horn loudspeakers include a built-in transformer with taps on the primary winding for different power settings. The horn loudspeakers are supplied with a sturdy mounting bracket allowing the sound beam to be accurately directed. The bracket has a ratchet facility to ensure it stays correctly positioned.

 flameproof horn

The flame paths, flare and body of both loudspeakers are constructed from a UV stable glass reinforced polyester (GRP). This strong, fire- and corrosion resistant material offers greater reliability and reduced maintenance costs. GRP is also chemical resistant and thermally stable, making it ideal for even the harshest environments. The horns are weatherproof, and incorporate stainless steel mounting brackets and captive cover screws, and a stainless steel sinter, to increase their resistance to corrosion.

• ATEX – approved

• BASEEFA-certified

• CENELEC-approved

• Glass reinforced polyester with

strong, fire retardant properties

• Reduced maintenance costs

• Corrosion and chemical


• Water- and dust protected to

class IP66 & IP67

• Complies with international

installation and safety regulations


Outright Purchase:R7995.00

LBC3437/00:Flame proof horn 22.5/15w


Outright Purchase:R9995.00

LBC3438/00:Flame proof horn 37.5/25w